Total number of Colleges & Universities: 4084
4 year: 2363
2 year: 1721
Statistical Abstract of the United States
No. 257 Higher Education Summary
A slightly different breakdown is available from the Chronicle of Higher Education:
"Public 4-year institutions 615
Public 2-year institutions 1,092
Private 4-year institutions, non-profit 1,536
Private 4-year institutions, for-profit 169
Private 2-year institutions, non-profit 184
Private 2-year institutions, for-profit 500
Total 4,096 "
Now, on the subject of postsecondary vocational/technical institutions:
Total postsecondary vocational/technical institutions: 3660
less than 2-year: 1587
source: U.S. Department of Education:
National Center for Education Statistics
statistical abstract of the u.s., colleges
"total number of colleges"
vocational, "postsecondary education", statistics
I hope this helps.